_json_encode: fix empty output on Solaris, newline loss in _hex_dump fallback

_hex_dump strips the trailing newline, and Oracle Solaris sed drops an
unterminated last line, so the sed step in _json_encode produced nothing
and every caller got an empty string on Solaris. Capture the hex first and
re-emit it with printf "%s\n".

The _ascii_hex fallback of _hex_dump (used when od/hexdump/xxd are not in
PATH, e.g. Tribblix) captured stdin with $(cat), losing trailing newlines,
and ran cut -c per line, so multi-line input was mis-encoded. Process the
input line by line instead.

Both surfaced by le_test_json_encode (#7212).

acme.sh

@@ -666,8 +666,15 @@ _hex_dump() {
     xxd -ps -c 20 -i | sed "s/ 0x/ /g" | tr -d ",\n" | tr -s " "
   else
     _debug3 "using _ascii_hex"
-    str=$(cat)
-    _ascii_hex "$str"
+    #line by line: the cut -c in _ascii_hex works per line, and a $(cat)
+    #capture would drop the trailing newlines (illumos without od in PATH)
+    while IFS= read -r _hd_line; do
+      _ascii_hex "$_hd_line"
+      printf " 0a"
+    done
+    if [ -n "$_hd_line" ]; then
+      _ascii_hex "$_hd_line"
+    fi
   fi
 }
 
@@ -907,7 +914,12 @@ _json_encode() {
   _j_str="$(sed 's/"/\\"/g' | sed "s/\r/\\r/g")"
   _debug3 "_json_encode"
   _debug3 "_j_str" "$_j_str"
-  echo "$_j_str" | _hex_dump | _lower_case | sed 's/0a/5c 6e/g' | tr -d ' ' | _h2b | tr -d "\r\n"
+  #printf, not echo: dash's echo interprets backslash escapes and would
+  #collapse the \\ sequences (e.g. Telegram MarkdownV2 escapes, issue 7212)
+  _j_hex="$(printf "%s\n" "$_j_str" | _hex_dump | _lower_case)"
+  #the hex line must end with a newline: Solaris sed drops an unterminated
+  #last line, which emptied the whole output
+  printf "%s\n" "$_j_hex" | sed 's/0a/5c 6e/g' | tr -d ' ' | _h2b | tr -d "\r\n"
 }
 
 #from: http:\/\/  to http://
@@ -915,7 +927,7 @@ _json_decode() {
   _j_str="$(sed 's#\\/#/#g')"
   _debug3 "_json_decode"
   _debug3 "_j_str" "$_j_str"
-  echo "$_j_str"
+  printf "%s\n" "$_j_str"
 }
 
 #extract the authorization URLs from an order response on stdin, as a

deploy/hp_ews.sh

@@ -0,0 +1,207 @@
+#!/usr/bin/env sh
+
+# Here is a script to deploy cert to an HP printer's Embedded Web Server (EWS).
+#
+# Docs: https://github.com/acmesh-official/acme.sh/wiki/deployhooks#47-deploy-the-certificate-to-an-hp-printer-ews
+#
+# Tested on an HP Color LaserJet Pro MFP M479fdw, firmware
+# CLRWTRXXXN002.2539E.00. It should work on any modern HP printer whose EWS
+# exposes the "Install Certificate" flow at
+# /Security/DeviceCertificates/NewCertWithPassword/Upload -- that endpoint
+# takes a password-protected PKCS#12 bundle, which this hook builds from the
+# issued certificate, its key and the CA chain.
+#
+# ```sh
+# export HP_EWS_PASSWORD=mysecret
+# export HP_EWS_INSECURE=1          # needed until the printer serves a trusted cert
+# acme.sh --deploy -d printer.example.com --deploy-hook hp_ews
+# ```
+#
+# Environment variables:
+#   HP_EWS_PASSWORD      (required)  EWS administrator password.
+#   HP_EWS_HOST          (optional)  IP or hostname of the printer.
+#                                    Default: the certificate's domain.
+#   HP_EWS_USERNAME      (optional)  EWS administrator user. Default: admin
+#   HP_EWS_PFX_PASSWORD  (optional)  Password for the generated PKCS#12
+#                                    bundle. A random one is used per run if
+#                                    unset; set it only if you want the
+#                                    bundle to be reproducible.
+#   HP_EWS_INSECURE      (optional)  Set to a non-empty value to skip TLS
+#                                    verification when talking to the
+#                                    printer. Needed on the first deploy,
+#                                    because the printer still serves its
+#                                    self-signed certificate at that point.
+#                                    acme.sh's global HTTPS_INSECURE is
+#                                    honoured as well.
+#
+# The hook authenticates with HTTP Basic auth. Printers whose EWS only offers
+# Digest auth are not supported.
+#
+# Requires openssl, to build the PKCS#12 bundle.
+#
+# returns 0 means success, otherwise error.
+
+########  Public functions #####################
+
+#domain keyfile certfile cafile fullchain pfx
+hp_ews_deploy() {
+  _cdomain="$1"
+  _ckey="$2"
+  _ccert="$3"
+  _cca="$4"
+  _cfullchain="$5"
+  _cpfx="$6"
+
+  _debug _cdomain "$_cdomain"
+  _debug _ckey "$_ckey"
+  _debug _ccert "$_ccert"
+  _debug _cca "$_cca"
+  _debug _cfullchain "$_cfullchain"
+  _debug _cpfx "$_cpfx"
+
+  _getdeployconf HP_EWS_HOST
+  _getdeployconf HP_EWS_USERNAME
+  _getdeployconf HP_EWS_PASSWORD
+  _getdeployconf HP_EWS_PFX_PASSWORD
+  _getdeployconf HP_EWS_INSECURE
+
+  HP_EWS_HOST="${HP_EWS_HOST:-$_cdomain}"
+  HP_EWS_USERNAME="${HP_EWS_USERNAME:-admin}"
+
+  _debug HP_EWS_HOST "$HP_EWS_HOST"
+  _debug HP_EWS_USERNAME "$HP_EWS_USERNAME"
+  _secure_debug HP_EWS_PASSWORD "$HP_EWS_PASSWORD"
+  _secure_debug HP_EWS_PFX_PASSWORD "$HP_EWS_PFX_PASSWORD"
+  _debug HP_EWS_INSECURE "$HP_EWS_INSECURE"
+
+  if [ -z "$HP_EWS_PASSWORD" ]; then
+    _err "HP_EWS_PASSWORD is required. Please set the password of the printer's EWS administrator account."
+    return 1
+  fi
+
+  _savedeployconf HP_EWS_HOST "$HP_EWS_HOST"
+  _savedeployconf HP_EWS_USERNAME "$HP_EWS_USERNAME"
+  _savedeployconf HP_EWS_PASSWORD "$HP_EWS_PASSWORD" "base64"
+  _savedeployconf HP_EWS_PFX_PASSWORD "$HP_EWS_PFX_PASSWORD" "base64"
+  _savedeployconf HP_EWS_INSECURE "$HP_EWS_INSECURE"
+
+  if ! _exists "${ACME_OPENSSL_BIN:-openssl}"; then
+    _err "openssl is required by this deploy hook, but was not found."
+    return 1
+  fi
+
+  # The bundle password only has to survive the single upload below, so a
+  # fresh random one is used unless the operator asked for a fixed value.
+  _HP_EWS_PFXPW="$HP_EWS_PFX_PASSWORD"
+  if [ -z "$_HP_EWS_PFXPW" ]; then
+    _HP_EWS_PFXPW="$(${ACME_OPENSSL_BIN:-openssl} rand -hex 24)"
+    if [ -z "$_HP_EWS_PFXPW" ]; then
+      _err "Could not generate a random password for the PKCS#12 bundle."
+      return 1
+    fi
+  fi
+  export _HP_EWS_PFXPW
+
+  # $6 is only materialised when Le_PFXPassword is set for this domain, and
+  # it would be built without the CA chain, so build our own bundle instead.
+  _hp_ews_pfx="$(_mktemp)"
+  _hp_ews_body="$(_mktemp)"
+  if [ -z "$_hp_ews_pfx" ] || [ -z "$_hp_ews_body" ]; then
+    _err "Could not create the temporary files needed for the upload."
+    _hp_ews_cleanup
+    return 1
+  fi
+
+  _hp_ews_ret=0
+  if ! _hp_ews_make_pfx; then
+    _hp_ews_ret=1
+  elif ! _hp_ews_upload; then
+    _hp_ews_ret=1
+  fi
+
+  _hp_ews_cleanup
+
+  return "$_hp_ews_ret"
+}
+
+####################  Private functions below ##################################
+
+_hp_ews_cleanup() {
+  [ -n "$_hp_ews_pfx" ] && rm -f "$_hp_ews_pfx"
+  [ -n "$_hp_ews_body" ] && rm -f "$_hp_ews_body"
+  unset _HP_EWS_PFXPW
+  # Do not leak the request header into any hook that runs after this one.
+  export _H1=""
+  return 0
+}
+
+# Bundle key, certificate and chain into $_hp_ews_pfx, protected by
+# $_HP_EWS_PFXPW. The password goes through the environment rather than the
+# command line so that it does not show up in ps output.
+_hp_ews_make_pfx() {
+  _info "Building the PKCS#12 bundle"
+
+  if ! ${ACME_OPENSSL_BIN:-openssl} pkcs12 -export \
+    -out "$_hp_ews_pfx" \
+    -inkey "$_ckey" \
+    -in "$_ccert" \
+    -certfile "$_cca" \
+    -passout env:_HP_EWS_PFXPW; then
+    _err "Failed to build the PKCS#12 bundle."
+    return 1
+  fi
+
+  if [ ! -s "$_hp_ews_pfx" ]; then
+    _err "The PKCS#12 bundle is empty."
+    return 1
+  fi
+
+  return 0
+}
+
+# Build the multipart body in $_hp_ews_body and POST it to the printer.
+_hp_ews_upload() {
+  _hp_ews_url="https://${HP_EWS_HOST}/Security/DeviceCertificates/NewCertWithPassword/Upload"
+  _hp_ews_boundary="----------------------------acmesh$(${ACME_OPENSSL_BIN:-openssl} rand -hex 16)"
+
+  {
+    printf -- "--%s\r\n" "$_hp_ews_boundary"
+    printf "Content-Disposition: form-data; name=\"certificate\"; filename=\"%s.pfx\"\r\n" "$_cdomain"
+    printf "Content-Type: application/x-pkcs12\r\n\r\n"
+    cat "$_hp_ews_pfx"
+    printf "\r\n"
+    printf -- "--%s\r\n" "$_hp_ews_boundary"
+    printf "Content-Disposition: form-data; name=\"password\"\r\n\r\n%s\r\n" "$_HP_EWS_PFXPW"
+    printf -- "--%s--\r\n" "$_hp_ews_boundary"
+  } >"$_hp_ews_body"
+
+  _H1="Authorization: Basic $(printf "%s:%s" "$HP_EWS_USERNAME" "$HP_EWS_PASSWORD" | _base64)"
+  export _H1
+  if [ "$HP_EWS_INSECURE" ]; then
+    export HTTPS_INSECURE=1
+  fi
+
+  _info "Uploading the certificate to $_hp_ews_url"
+  if ! _post_file "$_hp_ews_body" "$_hp_ews_url" "" "POST" "multipart/form-data; boundary=$_hp_ews_boundary" >/dev/null; then
+    if [ -z "$HTTPS_INSECURE" ]; then
+      _err "If the printer still serves its self-signed certificate, set HP_EWS_INSECURE=1 and try again."
+    fi
+    return 1
+  fi
+
+  # The EWS answers 201 Created on a successful install.
+  _hp_ews_code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\r\n")"
+  _debug _hp_ews_code "$_hp_ews_code"
+
+  if [ "$_hp_ews_code" != "201" ] && [ "$_hp_ews_code" != "200" ]; then
+    _err "The printer rejected the certificate (HTTP $_hp_ews_code)."
+    if [ "$_hp_ews_code" = "401" ] || [ "$_hp_ews_code" = "403" ]; then
+      _err "Check HP_EWS_USERNAME and HP_EWS_PASSWORD. Only HTTP Basic authentication is"
+      _err "supported; printers that only offer Digest cannot be used with this hook."
+    fi
+    return 1
+  fi
+
+  _info "Certificate installed (HTTP $_hp_ews_code). The printer restarts its web server shortly."
+  return 0
+}

dnsapi/dns_gandi_livedns.sh

@@ -59,6 +59,13 @@ dns_gandi_livedns_rm() {
   fulldomain=$1
   txtvalue=$2
 
+  GANDI_LIVEDNS_KEY="${GANDI_LIVEDNS_KEY:-$(_readaccountconf_mutable GANDI_LIVEDNS_KEY)}"
+  GANDI_LIVEDNS_TOKEN="${GANDI_LIVEDNS_TOKEN:-$(_readaccountconf_mutable GANDI_LIVEDNS_TOKEN)}"
+  if [ -z "$GANDI_LIVEDNS_KEY" ] && [ -z "$GANDI_LIVEDNS_TOKEN" ]; then
+    _err "No Token or API key (deprecated) specified for Gandi LiveDNS."
+    return 1
+  fi
+
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
     _err "invalid domain"
@@ -80,6 +87,20 @@ dns_gandi_livedns_rm() {
   _new_rrset_values=$(echo "$_new_rrset_values" | sed "s/\[ *,/\[/g")
   _debug "New rrset_values" "$_new_rrset_values"
 
+  # Last value removed: delete the record instead of leaving an empty TXT rrset.
+  if [ "$(echo "$_new_rrset_values" | tr -d ' ')" = "[]" ]; then
+    if ! _gandi_livedns_rest DELETE "domains/$_domain/records/$_sub_domain/TXT"; then
+      return 1
+    fi
+    _gandi_livedns_code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\\r\\n")"
+    if [ "$_gandi_livedns_code" != "204" ]; then
+      _err "Error deleting record: $response"
+      return 1
+    fi
+    _info "Removing record $(__green "success")"
+    return 0
+  fi
+
   _gandi_livedns_rest PUT \
     "domains/$_domain/records/$_sub_domain/TXT" \
     "{\"rrset_ttl\": 300, \"rrset_values\": $_new_rrset_values}" &&

dnsapi/dns_namecheap.sh

@@ -185,13 +185,14 @@ _get_root_by_getHosts() {
 }
 
 _namecheap_set_publicip() {
+  NAMECHEAP_SOURCEIP="${NAMECHEAP_SOURCEIP:-$(_readaccountconf_mutable NAMECHEAP_SOURCEIP)}"
 
   if [ -z "$NAMECHEAP_SOURCEIP" ]; then
     _err "No Source IP specified for Namecheap API."
     _err "Use your public ip address or an url to retrieve it (e.g. https://ifconfig.co/ip) and export it as NAMECHEAP_SOURCEIP"
     return 1
   else
-    _saveaccountconf NAMECHEAP_SOURCEIP "$NAMECHEAP_SOURCEIP"
+    _saveaccountconf_mutable NAMECHEAP_SOURCEIP "$NAMECHEAP_SOURCEIP"
     _debug sourceip "$NAMECHEAP_SOURCEIP"
 
     ip=$(echo "$NAMECHEAP_SOURCEIP" | _egrep_o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}')
@@ -252,6 +253,8 @@ _namecheap_parse_host() {
 }
 
 _namecheap_check_config() {
+  NAMECHEAP_API_KEY="${NAMECHEAP_API_KEY:-$(_readaccountconf_mutable NAMECHEAP_API_KEY)}"
+  NAMECHEAP_USERNAME="${NAMECHEAP_USERNAME:-$(_readaccountconf_mutable NAMECHEAP_USERNAME)}"
 
   if [ -z "$NAMECHEAP_API_KEY" ]; then
     _err "No API key specified for Namecheap API."
@@ -265,8 +268,8 @@ _namecheap_check_config() {
     return 1
   fi
 
-  _saveaccountconf NAMECHEAP_API_KEY "$NAMECHEAP_API_KEY"
-  _saveaccountconf NAMECHEAP_USERNAME "$NAMECHEAP_USERNAME"
+  _saveaccountconf_mutable NAMECHEAP_API_KEY "$NAMECHEAP_API_KEY"
+  _saveaccountconf_mutable NAMECHEAP_USERNAME "$NAMECHEAP_USERNAME"
 
   return 0
 }

dnsapi/dns_primedns.sh

@@ -0,0 +1,154 @@
+#!/usr/bin/env sh
+# shellcheck disable=SC2034
+dns_primedns_info='PrimeDNS
+Site: primedns.net
+Docs: github.com/acmesh-official/acme.sh/wiki/dnsapi2#dns_primedns
+Options:
+ PRIMEDNS_API_KEY API Key. Scope acme:name:_acme-challenge.<hostname> for each name you issue (or dns:write)
+OptionsAlt:
+ PRIMEDNS_API_URL API base URL. Optional, default https://api.primedns.net/v1
+Issues: github.com/acmesh-official/acme.sh/issues/7330
+Author: PrimeDNS <acme@primedns.net>
+'
+
+PRIMEDNS_Api_Default="https://api.primedns.net/v1"
+
+########  Public functions #####################
+
+#Usage: dns_primedns_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_primedns_add() {
+  fulldomain=$(_idn "$1")
+  txtvalue=$2
+
+  PRIMEDNS_API_KEY="${PRIMEDNS_API_KEY:-$(_readaccountconf_mutable PRIMEDNS_API_KEY)}"
+  if [ -z "$PRIMEDNS_API_KEY" ]; then
+    PRIMEDNS_API_KEY=""
+    _err "You didn't specify a PrimeDNS API key (PRIMEDNS_API_KEY) yet."
+    _err "Create one in the PrimeDNS panel (Account -> API Keys) with the scope acme:name:_acme-challenge.<hostname> for each name you issue."
+    return 1
+  fi
+
+  PRIMEDNS_API_URL="${PRIMEDNS_API_URL:-$(_readaccountconf_mutable PRIMEDNS_API_URL)}"
+
+  #save the credentials to the account conf file.
+  _saveaccountconf_mutable PRIMEDNS_API_KEY "$PRIMEDNS_API_KEY"
+  if [ "$PRIMEDNS_API_URL" ]; then
+    _saveaccountconf_mutable PRIMEDNS_API_URL "$PRIMEDNS_API_URL"
+  fi
+
+  _info "Using PrimeDNS"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  if ! _primedns_rest POST "$fulldomain" "$txtvalue"; then
+    return 1
+  fi
+  _info "Added, OK"
+  return 0
+}
+
+#Usage: dns_primedns_rm   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_primedns_rm() {
+  fulldomain=$(_idn "$1")
+  txtvalue=$2
+
+  PRIMEDNS_API_KEY="${PRIMEDNS_API_KEY:-$(_readaccountconf_mutable PRIMEDNS_API_KEY)}"
+  if [ -z "$PRIMEDNS_API_KEY" ]; then
+    PRIMEDNS_API_KEY=""
+    _err "You didn't specify a PrimeDNS API key (PRIMEDNS_API_KEY) yet."
+    return 1
+  fi
+  PRIMEDNS_API_URL="${PRIMEDNS_API_URL:-$(_readaccountconf_mutable PRIMEDNS_API_URL)}"
+
+  _info "Using PrimeDNS"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  if ! _primedns_rest DELETE "$fulldomain" "$txtvalue"; then
+    return 1
+  fi
+  _info "Removed, OK"
+  return 0
+}
+
+####################  Private functions below ##################################
+
+#Usage: _primedns_rest  POST|DELETE  _acme-challenge.www.domain.com  txtvalue
+#The API creates/removes the TXT record with exactly the name given, so the full
+#name acme.sh passes (_acme-challenge.<domain>, or the name of a DNS alias) is
+#sent as it is.
+_primedns_rest() {
+  _method=$1
+  _name=$2
+  _value=$3
+  _url="${PRIMEDNS_API_URL:-$PRIMEDNS_Api_Default}/dns/acme-challenge"
+
+  #The body is built by hand, so refuse anything that would need JSON escaping.
+  case "$_name$_value" in
+  *\"* | *\\*)
+    _err "Refusing to send '$_name': it contains a quote or a backslash."
+    return 1
+    ;;
+  esac
+  if [ -z "$_name" ] || _is_idn "$_name"; then
+    _err "Cannot send '$_name': it is not a plain ASCII host name. For an IDN name install idn (acme.sh converts it to punycode) or pass the punycode name."
+    return 1
+  fi
+  _body="{\"name\":\"$_name\",\"value\":\"$_value\"}"
+  _debug _body "$_body"
+
+  _primedns_retried=""
+  while true; do
+    #acme.sh sends _H1.._H5 with every later request of this process, so the API key
+    #header must not stay set once this call is done (it would reach other hosts).
+    _primedns_old_h1="$_H1"
+    export _H1="X-API-Key: $PRIMEDNS_API_KEY"
+    : >"$HTTP_HEADER"
+    response="$(_post "$_body" "$_url" "" "$_method" "application/json")"
+    _ret=$?
+    export _H1="$_primedns_old_h1"
+    _status=$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d '\r\n')
+    if [ "$_ret" != "0" ]; then
+      _err "Error calling the PrimeDNS API ($_method /dns/acme-challenge)."
+      return 1
+    fi
+    response="$(echo "$response" | _normalizeJson)"
+    _debug response "$response"
+    _debug _status "$_status"
+
+    #Rate limited or temporary server error: wait and try once more.
+    if [ -z "$_primedns_retried" ] && { [ "$_status" = "429" ] || [ "$_status" = "502" ] || [ "$_status" = "503" ] || [ "$_status" = "504" ]; }; then
+      _wait="$(_retryafter_seconds <"$HTTP_HEADER")"
+      case "$_wait" in
+      '' | *[!0-9]*) _wait=5 ;;
+      esac
+      [ "$_wait" -gt 60 ] && _wait=60
+      _info "PrimeDNS API answered HTTP $_status, retrying in $_wait seconds."
+      _sleep "$_wait"
+      _primedns_retried=1
+      continue
+    fi
+    break
+  done
+
+  if _contains "$response" '"success":true'; then
+    return 0
+  fi
+
+  if [ "$_status" = "401" ]; then
+    _err "The PrimeDNS API refused the key (HTTP 401): it is wrong, revoked or expired. Check PRIMEDNS_API_KEY."
+  elif _contains "$response" 'IP_NOT_ALLOWED'; then
+    _err "This PrimeDNS API key may not be used from this address (allowed_ips). Add the address to the key or run acme.sh from an allowed host."
+  elif _contains "$response" 'NAME_NOT_ALLOWED'; then
+    _err "This PrimeDNS API key may not write $_name: add the scope acme:name:$_name to the key, or the zone to its allowed zones."
+  elif _contains "$response" 'INSUFFICIENT_SCOPE'; then
+    _err "This PrimeDNS API key needs the scope acme:name:$_name (or dns:write)."
+  elif _contains "$response" 'DOMAIN_NOT_FOUND'; then
+    _err "$_name is not in a zone of the PrimeDNS account that owns this API key."
+  elif [ "$_status" = "429" ]; then
+    _err "PrimeDNS API rate limit still hit after a retry. Try again in a minute."
+  else
+    _err "PrimeDNS API error (HTTP $_status): $response"
+  fi
+  return 1
+}

dnsapi/dns_yc.sh

@@ -106,13 +106,16 @@ dns_yc_add() {
   _debug _domain "$_domain"
 
   _debug "Getting txt records"
-  if ! _yc_rest GET "zones/${_domain_id}:getRecordSet?type=TXT&name=$_sub_domain"; then
+  if ! _yc_rest GET "zones/${_domain_id}:getRecordSet?type=TXT&name=$fulldomain"; then
     _err "Error: $response"
     return 1
   fi
 
   _info "Adding record"
-  if _yc_rest POST "zones/$_domain_id:upsertRecordSets" "{\"merges\": [ { \"name\":\"$_sub_domain\",\"type\":\"TXT\",\"ttl\":\"120\",\"data\":[\"$txtvalue\"]}]}"; then
+  # The absolute name (trailing dot) also covers a record at the zone apex,
+  # e.g. with --domain-alias, which has no relative form: an empty name is
+  # rejected by the API.
+  if _yc_rest POST "zones/$_domain_id:upsertRecordSets" "{\"merges\": [ { \"name\":\"$fulldomain\",\"type\":\"TXT\",\"ttl\":\"120\",\"data\":[\"$txtvalue\"]}]}"; then
     if _contains "$response" "\"done\": *true"; then
       _info "Added, OK"
       return 0
@@ -167,7 +170,7 @@ dns_yc_rm() {
   # upsertRecordSets.deletions removes only the given value from the rrset,
   # leaving any other values at the same name (e.g. base + wildcard domain)
   # intact -- no need to read the current data set and recompute it.
-  if _yc_rest POST "zones/$_domain_id:upsertRecordSets" "{\"deletions\": [ { \"name\":\"$_sub_domain\",\"type\":\"TXT\",\"ttl\":\"120\",\"data\":[\"$txtvalue\"]}]}"; then
+  if _yc_rest POST "zones/$_domain_id:upsertRecordSets" "{\"deletions\": [ { \"name\":\"$fulldomain\",\"type\":\"TXT\",\"ttl\":\"120\",\"data\":[\"$txtvalue\"]}]}"; then
     if _contains "$response" "\"done\": *true"; then
       _info "Delete, OK"
       return 0